TY - BOOK AU - Richardson, Claire A. CN - TC801 CN - TD224.M3 CN - TC801 CY - Washington : DA - 1982. ID - 119577 KW - Groundwater PB - U.S. Govt. Print. Off., PP - Washington : PY - 1982. T1 - Ground water in the Piedmont upland of central Maryland / TI - Ground water in the Piedmont upland of central Maryland / VL - 2077 ER -